Can you see the northern lights in Isle of Lewis in June?

On dark, clear nights with enough activity. 30 of 30 nights at Isle of Lewis have civil darkness, and 43% of past June days reached Kp 3.

How dark is Isle of Lewis in June?

Isle of Lewis averages 3.0 hours of civil night a night in June 2027, from 3 h 39 min on the 1st to 3 h 1 min on the last night.

How cloudy is Isle of Lewis in June?

NASA POWER's 2001 to 2020 climatology gives Isle of Lewis's 1 degree cell 87% mean cloud in June, against 85% for the whole year. It is an all-hours average, not a forecast.

What is the best night in June 2027 for aurora in Isle of Lewis?

By darkness and moon alone, Jun 1, with 2 h 26 min of moon-free darkness inside 10 PM to 2 AM at Isle of Lewis. Activity on that date will only be known hours ahead.

Is June or July better in Isle of Lewis?

By civil night times the clear share, June scores 0.4 hours at Isle of Lewis and July 0.5. July comes out ahead.

Isle of Lewis · June 2027

Northern lights in Isle of Lewis in June 2027

Answer

June gives Isle of Lewis 2.9 hours of civil night on the 15th, the lightest month of its year, under 87% mean cloud. 43% of June days since 1996 reached Kp 3, enough for the oval edge to reach Isle of Lewis.

3.0 h

civil night, average night

SunCalc for 58.22, -6.39; NASA POWER; GFZ Kp

June against the rest of the year

1.7

1.5

1.0

0.4

0.5

1.0

1.6

1.8

1.7

June cloud at Isle of Lewis averages 87% in NASA POWER's 2001 to 2020 record, 2 points cloudier than its yearly mean. May is Isle of Lewis's clearest month at 80%. By civil night times clear sky, June scores 0.4 hours at Isle of Lewis, 12th of 12. Aberdeen, 282 km away, averages 84%, clearer by 3 points.

Civil night at Isle of Lewis starts June at 3 h 39 min and reaches 3 h 1 min by June 30, 0.6 hours shorter. No night keeps the 10 PM to 2 AM window fully dark at Isle of Lewis. The sun never reaches 18 degrees down, so Isle of Lewis gets no astronomical night in June.

June night by night

June opens toward a new moon on Jun 4, with full moon on Jun 19, in Europe/London dates. Isle of Lewis gets 39 hours of civil night with the moon below the horizon across the month. The best of them for moon-free darkness inside 10 PM to 2 AM: Jun 1 (2 h 26 min), Jun 2 (2 h 24 min), Jun 3 (2 h 22 min).

1
11% lit
3.2 h
2
5% lit
3.4 h
3
1% lit
3.5 h
4
0% lit
3.4 h
New
5
2% lit
3.0 h
6
7% lit
2.4 h
7
14% lit
2.0 h
8
23% lit
1.8 h
9
33% lit
1.6 h
10
45% lit
1.5 h
11
56% lit
1.4 h
12
66% lit
1.3 h
13
76% lit
1.2 h
14
84% lit
1.1 h
15
91% lit
0.9 h
16
96% lit
0.6 h
17
99% lit
0.0 h
18
100% lit
0.0 h
19
99% lit
0.0 h
Full
20
97% lit
0.1 h
21
92% lit
0.3 h
22
87% lit
0.4 h
23
80% lit
0.5 h
24
71% lit
0.5 h
25
62% lit
0.6 h
26
53% lit
0.7 h
27
42% lit
0.8 h
28
32% lit
0.9 h
29
23% lit
1.1 h
30
14% lit
1.4 h

Each cell is the night that starts on that date. Hours are civil-dark time with the moon below the horizon; the green rule scales with them. Green outline: new moon. Bone outline: full moon.

Activity in past Junes

Isle of Lewis needs Kp 3 for the average oval edge to sit overhead. 383 of the 900 June days from 1996 to 2025 (43%) reached it in the GFZ Potsdam record, one of the three quietest months for that level; storm days with Kp 5 or more made up 8%. Isle of Lewis sits at 60.8 degrees geomagnetic, inside SWPC's 60 to 75 degree band, where aurora can be seen on more than half of all nights. No storm is needed: by SWPC's rule the average oval edge is overhead at Kp 3.

June across United Kingdom

Isle of Lewis ranks 27th in United Kingdom for civil night on June 15, behind Stoke-on-Trent at 5.2 hours. Coming from May (5.1 hours at Isle of Lewis), June loses darkness, and the nights keep growing into July (4.1 hours on the 15th). The June solstice falls on June 21, 15:07 Isle of Lewis time.

Civil night on June 15 and June cloud, month-page towns in United Kingdom
Town	Civil night	Cloud
Stoke-on-Trent	5.2 h	75%
Mansfield	5.2 h	77%
Manchester, England	5.1 h	75%
Sheffield	5.1 h	77%
Liverpool	5.1 h	75%
St Helens	5.1 h	75%
Chesterfield	5.1 h	77%
Lincoln	5.1 h	77%
Leeds	5.0 h	77%
Kingston upon Hull	5.0 h	77%
Preston	5.0 h	75%
Burnley	5.0 h	75%
Isle of Lewis	2.9 h	87%

Darkness and moon, every night

Isle of Lewis, June 2027: each night from local noon to the next noon
Night	Civil	Moon-free dark	Moon-free, 10 PM to 2 AM	Moon lit
Tue Jun 1	3 h 39 min	3 h 13 min	2 h 26 min	11%
Wed Jun 2	3 h 35 min	3 h 24 min	2 h 24 min	5%
Thu Jun 3	3 h 30 min	3 h 30 min	2 h 22 min	1%
Fri Jun 4	3 h 26 min	3 h 26 min	2 h 19 min	0%
Sat Jun 5	3 h 22 min	3 h	1 h 55 min	2%
Sun Jun 6	3 h 18 min	2 h 21 min	1 h 18 min	7%
Mon Jun 7	3 h 15 min	1 h 59 min	58 min	14%
Tue Jun 8	3 h 11 min	1 h 46 min	46 min	23%
Wed Jun 9	3 h 8 min	1 h 37 min	38 min	33%
Thu Jun 10	3 h 5 min	1 h 30 min	33 min	45%
Fri Jun 11	3 h 2 min	1 h 24 min	28 min	56%
Sat Jun 12	2 h 59 min	1 h 19 min	24 min	66%
Sun Jun 13	2 h 57 min	1 h 12 min	18 min	76%
Mon Jun 14	2 h 55 min	1 h 4 min	11 min	84%
Tue Jun 15	2 h 53 min	52 min	0 min	91%
Wed Jun 16	2 h 51 min	33 min	0 min	96%
Thu Jun 17	2 h 50 min	1 min	0 min	99%
Fri Jun 18	2 h 49 min	0 min	0 min	100%
Sat Jun 19	2 h 49 min	0 min	0 min	99%
Sun Jun 20	2 h 48 min	3 min	3 min	97%
Mon Jun 21	2 h 48 min	15 min	15 min	92%
Tue Jun 22	2 h 49 min	22 min	22 min	87%
Wed Jun 23	2 h 49 min	27 min	27 min	80%
Thu Jun 24	2 h 50 min	32 min	32 min	71%
Fri Jun 25	2 h 51 min	35 min	35 min	62%
Sat Jun 26	2 h 53 min	40 min	40 min	53%
Sun Jun 27	2 h 54 min	45 min	45 min	42%
Mon Jun 28	2 h 57 min	52 min	52 min	32%
Tue Jun 29	2 h 59 min	1 h 3 min	1 h 3 min	23%
Wed Jun 30	3 h 1 min	1 h 22 min	1 h 22 min	14%

Moon lit: SunCalc illuminated fraction at the middle of the 10 PM to 2 AM window.

Questions

Can you see the northern lights in Isle of Lewis in June?: On dark, clear nights with enough activity. 30 of 30 nights at Isle of Lewis have civil darkness, and 43% of past June days reached Kp 3.
How dark is Isle of Lewis in June?: Isle of Lewis averages 3.0 hours of civil night a night in June 2027, from 3 h 39 min on the 1st to 3 h 1 min on the last night.
How cloudy is Isle of Lewis in June?: NASA POWER's 2001 to 2020 climatology gives Isle of Lewis's 1 degree cell 87% mean cloud in June, against 85% for the whole year. It is an all-hours average, not a forecast.
What is the best night in June 2027 for aurora in Isle of Lewis?: By darkness and moon alone, Jun 1, with 2 h 26 min of moon-free darkness inside 10 PM to 2 AM at Isle of Lewis. Activity on that date will only be known hours ahead.
Is June or July better in Isle of Lewis?: By civil night times the clear share, June scores 0.4 hours at Isle of Lewis and July 0.5. July comes out ahead.

Sources and verification

SunCalchttps://github.com/mourner/suncalc
NASA POWER climatologyhttps://power.larc.nasa.gov/docs/services/api/temporal/climatology/
GFZ Potsdam Kp indexhttps://kp.gfz.de/en/data
NOAA SWPC, Tips on viewing the aurorahttps://www.spaceweather.gov/content/tips-viewing-aurora

Quoted figures last checked against their sources on 2026-09-30; next review 2026-12-31. Computed figures come from SunCalc and the IGRF-14 dipole as described in the methodology. Every quote is listed in the sources ledger.